The power bar shown first uses the CEE 7/5 socket (aka “French”, also found in Belgium and Czech Republic).
The CEE 7/5 socket has no defined polarity per standard until recently, so it may be wired with the life wire on either side.
https://www.toughleads.co.uk/pages/european-sockets
Current recommendations are to wire life to the right hole (except Czech Republic which recommends wiring left). If life is wired to the right, the AC iPurifier will indicate correct polarity, because this is the correct polarity. If it is wired in a different way – the AC iPurifier will correctly indicate incorrect mains polarity, as it is incorrect.
However as the CEE7/5 is “polarised”, meaning a plug can only be plugged in one way, but the polarity of AC wires is generally undefined, it is not reasonable to expect the polarity indication to be correct unless correct wiring has been verified.
Our plug is CEE 7/7 and should correctly engage with the earth pin. If the Earth LED is red, this indicates that no earth connection is being made. Missing earth on a modern mains system intended to have an earth connection is a serious matter and causes serious risks to health and life.
If the earth pin in the CEE 7/5 socket is not fully compliant with the standards (diameter too small), it may not make positive contact. In this case it may be necessary to tighten the contact sleeve residing inside the plug after removing the earth connection from the plug, by loosing the screw holding the earth connection part in place and removing it and then pressing the contact sections together.
Past that, the AC iPurifiers earth/ground pin is not physically protruding into the ground/earth socket on the international power strip.
